Grain-huller.



EATENTED AUG. 1.3, A907. E. KEER, A. J. EAUMANN E A. J. sEANKs.

GRAIN HLLER.

APPLLOATION FILED JAN. 18, 19o?.

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PATENT OEEIGE.

PETER KERR, ALBERT .1.BAUMANN, AND ADAM I. SHANKS, OF PORTLAND, OREGON.

GRAIN-HULLER,

Specification of Letters Patent.

Patented Aug. 13, 1907.

Application filed January 18, 1907. Serial No. 352,985.

To all 'whom 'it may concern:

Be it known that we, PETER KEER, a citizen oi Great Britain, and ALBERT J. BAUMANN and ADAM J. SnANKs, both citizens oi the United States, residing at Portland, in the county oi Multnomah and State oi Oregon, have invented certain new and useful lmprovements in Grain-Hullers; and we do hereby declare the ollowing to be a full, clear, and exact description oi the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to improvements in grain hulling and cleaning machines, particularly oats, to prepare them ior use in the manufacture oi the higher grades oi oat ood products.

The objects oi our improvements are to provide a machine adapted to clean and remove the hulls irom the oats or other' grain, to separate the said hulls and all trash and dust from the cleaned grains leaving the grains broken as little as possible; the said machine to have its parts adjustable to grains oi different sizes and to compensate ior any wear upon the abrading portions subject to wear by friction. We attain these objects by the mechanism illustrated in the accompanying drawings in which Figure 1 is a side elevation, part in section, and having the inclosing screen 12 partly cut away to show the interior. Fig. 2 is a sectional plan on the lines A A oi Fig. l. Fig. 3 is a detail showing means of adjusting.

On the shaft 1 are mounted a drive pulley 2 and spiders 3 and 4. The shaft l rotates in bearings 5 and 6, secured to the trame 7. The bearing 6 is integral with a plate 8 which inclose tightly the top oi the machine. The lower portion oi the machine is also inclosed by a plate 9. Resting against iianges 10 and 11 oi the plates 8 and 9 and completely encircling the same is a perforated sheet metal cylinder 12, to the inside surface oi which are secured inpositions parallel to the axis oi the shaft 1- long narrow strips 13 oi metal or other suitable material.

Adjustably mounted on the spiders 3 and 4 in positions parallel to the axis oi the shait 1 are ribbed metal plates 14 containing on their iaces ribs 15 and brushes or knobs 16 The plates 14 are made adjustable on their mountings by means oi the set screws 17, Fig. 3,

thereby enabling a variation of the clearance between the strips 13 and ribs 15. On the spiders 3 and 4 are also mounted the plates or wipers 18.

In the center ot the plate 9 is an opening bounded by a flange 19 which is in close Contact with a 'flange 20 on the spider 3.

In an opening in the plate 8 is inserted the end oi a eed spout 21 leading from the hopper. Immediately adjacent to the under side oi the plate 9 is a space 22 inclosed by the walls 23 and from which leads a spout 24 to an exhaust ian. Connected with an opening in the plate 9 is a spout 25. In the plate 9 are openings 26 outside ofthe cylinder 12 and leading into the chamber 22. Walls 27 inserted in the frame '7 completely inclose the cylinder 12.

The operation of the machine is as ollowsz-Foreign matter, light grain and chaff are removed from the stock by well known methods beiore its introduction into the machine. The shaft carrying the spiders 3 and 4, and other attached parts, is rapidly rotated in the direction shown by the arrow. The grain is ied in through the spout 21 falling into the cup-shaped portion oi the spider 4 from which it is thrown by centrifugal force and falls into the space between the plates 14 and cylinder 12. Here the slats 13 obstruct the tendency oi the air to rotate with the wipers 18 and break it up into whirlpools, thus whirling the grain in its descent and partly holding it in suspension while the ribs 15 and brushes 16 are striking it iorcibly in its various positions, by which means the hull is loosened and removed, together with all dirt and dust, but without breaking or injuring the grain. The grain is not ed rapidly enough to pack in the machine but only fast enough to permit oi its being held in suspension by the whirling of the air during its fall to secure the desired results without breaking the grain, after which the grain and hulls fall onto the plate 9 and pass out through the spout 25 into suitable separating and cleaning machinery. A part 0i the dust and finer material passes through the periorated cylinder 12 and holes 26, and a part through the opening in center oi plate 9. The exhaust pressure through the spout 24 and the size ot opening 26 in the plate 9 are so arranged as to give the desired speed oi fall of the grain through the machine.

What we claim as our invention and desire to secure by Letters Patent is- 1. ln a device of the class described, a rotating member comprising an axle shaft, spaced heads carried by the shaft, plates extending between and connecting the heads and disposed substantially parallel with the shaft, means to adjust the interval between the plates and shaft, a rib extending longitudinally of the plate, and spaced projections formed upon the plate upon opposite sides of the rib.

2. In a device of the class described, a rotating member comprising 'an axial shaft carrying spaced heads, plates secured to the heads and in substantial parallelism means to vary the intervals between the shaft and the plates, a rib extending longitudinally and centrally of each plate, projections formed upon the plate upon opposite sides of the rib, a casing inclosing the rotating member, and ribs formed upon the interior surface of the casing.

3. In a device 0f the class described, a rotating member comprising an axial shaft carrying spaced heads, plates secured to thc periphery of the heads and in substantial parallelism with the shaft, means to vary the intervals between the shaft and the plates at opposite ends independently, a rib extending longitudinally and centrally of each plate, projections formed upon the plates upon opposite sides of the rib and extending away from the shaft, a perforated casing inclosing the rotating member, and

ribs formed upon the interior surface of the casing and extendingtoward the rotating members.

In testimony whereof We hereunto ax ourl signature, in presence of two witnesses.

PETER KERR.' ALBERT J. BAUMANN. ADAM J. SHANKS.

Witnesses J'. C. Vmzin,V ARTHUR L. VEAzIE. 

